If an output is destroyed while an idle_done event is scheduled, it
results in the following Address Sanitizer Output:
==1469==ERROR: AddressSanitizer: heap-use-after-free on address 0x6170000bb668 at pc 0x7f49aaa0c348 bp 0x7ffed5da35b0 sp 0x7ffed5da35a0
WRITE of size 8 at 0x6170000bb668 thread T0
#0 0x7f49aaa0c347 in schedule_done_handle_idle_timer ../subprojects/wlroots/types/wlr_output.c:265
#1 0x7f49aa2f875b in wl_event_loop_dispatch_idle (/usr/lib/libwayland-server.so.0+0xa75b)
#2 0x7f49aa2f8815 in wl_event_loop_dispatch (/usr/lib/libwayland-server.so.0+0xa815)
#3 0x7f49aa2f739b in wl_display_run (/usr/lib/libwayland-server.so.0+0x939b)
#4 0x556622dadd51 in server_run ../sway/server.c:216
#5 0x556622dac25d in main ../sway/main.c:397
#6 0x7f49aa0d0ce2 in __libc_start_main (/usr/lib/libc.so.6+0x23ce2)
#7 0x556622d8d09d in _start (/usr/local/bin/sway+0x3909d)
0x6170000bb668 is located 488 bytes inside of 672-byte region [0x6170000bb480,0x6170000bb720)
freed by thread T0 here:
#0 0x7f49aabc8f89 in __interceptor_free /build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cc:66
#1 0x7f49aa968fc2 in drm_connector_destroy ../subprojects/wlroots/backend/drm/drm.c:829
#2 0x7f49aaa0cc52 in wlr_output_destroy ../subprojects/wlroots/types/wlr_output.c:357
#3 0x7f49aa96d2e9 in scan_drm_connectors ../subprojects/wlroots/backend/drm/drm.c:1265
#4 0x7f49aa961a59 in drm_invalidated ../subprojects/wlroots/backend/drm/backend.c:135
#5 0x7f49aaa2e1e9 in wlr_signal_emit_safe ../subprojects/wlroots/util/signal.c:29
#6 0x7f49aa98319f in udev_event ../subprojects/wlroots/backend/session/session.c:52
#7 0x7f49aa2f87f1 in wl_event_loop_dispatch (/usr/lib/libwayland-server.so.0+0xa7f1)
previously allocated by thread T0 here:
#0 0x7f49aabc95a1 in __interceptor_calloc /build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cc:95
#1 0x7f49aa96b7a2 in scan_drm_connectors ../subprojects/wlroots/backend/drm/drm.c:1114
#2 0x7f49aa961a59 in drm_invalidated ../subprojects/wlroots/backend/drm/backend.c:135
#3 0x7f49aaa2e1e9 in wlr_signal_emit_safe ../subprojects/wlroots/util/signal.c:29
#4 0x7f49aa98319f in udev_event ../subprojects/wlroots/backend/session/session.c:52
#5 0x7f49aa2f87f1 in wl_event_loop_dispatch (/usr/lib/libwayland-server.so.0+0xa7f1)
SUMMARY: AddressSanitizer: heap-use-after-free ../subprojects/wlroots/types/wlr_output.c:265 in schedule_done_handle_idle_timer
Shadow bytes around the buggy address:
0x0c2e8000f670: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2e8000f680: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2e8000f690: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2e8000f6a0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2e8000f6b0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
=>0x0c2e8000f6c0: fd fd fd fd fd fd fd fd fd fd fd fd fd[fd]fd fd
0x0c2e8000f6d0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2e8000f6e0: fd fd fd fd fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2e8000f6f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2e8000f700: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2e8000f710: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
Remove the idle_done idle timer when the output is destroyed
This commit introduces wlr_output_schedule_done and refactors the mechanism
used to send wl_output events to clients.
wlr_output_schedule_done schedules a wl_output.done event. This allows clients
to see wlr_output property changes as atomic.
This function is also useful for add-on interfaces like xdg_output which need
to trigger a wl_output.done event to apply their new state.
wlr_output_damage_make_current has been renamed to
wlr_output_damage_attach_render, since it's just a wrapper for
wlr_output_attach_render.
wlr_output_damage_swap_buffers has been removed completely. Instead,
wlr_output_damage now listens to successful wlr_output commits and updates its
internal state accordingly.
This updates the backend part of the output API. This is mostly renaming:
make_current becomes attach_render and swap_buffers becomes commit.
This also fixes the RDP backend to support NULL damage.
This is necessary for direct scan-out and other upcoming features. This patch
changes the output API to look like the wl_surface API.
Outputs now have some double-buffered state: the frame to be submitted
(currently only wlr_renderer frames are supported) and the damaged region.
To attach a pending frame, use wlr_output_attach_render. To set the pending
damaged region, use wlr_output_set_damage.
To submit the pending state, call wlr_output_commit. This will submit the
pending frame to the backend.
To migrate from the old API to the new one:
- Replace wlr_output_make_current calls by wlr_output_attach_render
- Replace wlr_output_swap_buffers calls by wlr_output_set_damage and
wlr_output_commit
It doesn't make sense for clients to send "accept" requests to offers that
aren't drag-and-drop. I discussed with Daniel Stone to make it a protocol
error [1] but too many clients send it (e.g. GTK+). Let's just log it for now.
[1]: https://gitlab.freedesktop.org/wayland/wayland/merge_requests/11#note_149710
* idle: enable the compositors to add custom idle timeouts
* idle: add a private constructor which also creates the resource
* idle: move resource creation to the idle implementation callback
When the proximity_in event is sent for tablet_v2 and there's already a
surface that currently has tablet (tool) focus, it should be told that
this is no longer the case, so we need to send the proximity_out event.
* Add compile args for libinput to lib_wlr_types
Fixes the build on openSUSE Tumbleweed
* Remove libinput include from wlr_tablet_v2.c
+ libinput isn't used in the file
+ Also remove libinput dependency from types/meson.build
Since the fullscreen request may be made before the toplevel's surface
is mapped, the requested fullscreen output needs to be stored so it
can be retrieved on map (along with the existing fullscreen property).
This commit makes the required changes for wlr_xdg_toplevel_v6.
Since the fullscreen request may be made before the toplevel's surface
is mapped, the requested fullscreen output needs to be stored so it
can be retrieved on map (along with the existing fullscreen property).
This commit makes the required changes for wlr_xdg_toplevel.
If there were no outputs in the output layout,
wlr_output_layout_get_box would return the box:
{
.x = INT_MIN,
.y = INT_MIN,
.width = INT_MIN - INT_MAX,
.height = INT_MIN - INT_MAX
}
which results in an integer underflow for both the width and height.
This changes the logic to have the box be all zeroes, since an empty
output layout does not have a width or height and the location of
something without a size is irrelevant so this just uses the origin.
The grab serial can be used to start a pointer grab. A button pressed event
should be used for this purpose.
Thus, we should only save the grab serial if it's the first button pressed
event we send. This commit makes it so the serial is not saved if a button is
released while another button is still pressed.
